EP 0103224 B1 19861126 - A SYRINGE FOR COLLECTING A LIQUID SAMPLE
Title (en)
A SYRINGE FOR COLLECTING A LIQUID SAMPLE
Publication
Application
Priority
DK 385582 A 19820827
Abstract (en)
[origin: US4519402A] A syringe for collecting a sample of blood or another liquid comprises a syringe cylinder and a piston arranged displaceably therein. One or more axially extending recesses are formed in the inner wall of the syringe cylinder axially spaced from the inner end thereof. The recess or recesses contain a material which is pervious to gas and impervious to liquid, such as a hydrophobic material, a hydrophilic material with capillary effect, or a material which swells when contacted by liquid. The sample collecting chamber within the cylinder may be vented to the atmosphere by placing the piston in the recessed area of the cylinder. Arterial blood may then pass into the syringe under arterial blood pressure, and the flow of blood into the syringe is automatically stopped when the sample collecting chamber of the syringe has been filled, because blood cannot pass the liquid impervious material arranged in the recesses. The axial innermost portion of the inner cylinder wall, which is not recessed, may cooperate with the piston in a conventional manner so as to provide a suction effect within the blood collecting chamber, if desired.
IPC 1-7
IPC 8 full level
A61B 5/15 (2006.01); A61M 5/315 (2006.01); B01L 3/02 (2006.01); G01N 1/00 (2006.01)
CPC (source: EP US)
A61B 5/15003 (2013.01 - EP US); A61B 5/150213 (2013.01 - EP US); A61B 5/150236 (2013.01 - EP US); A61B 5/150244 (2013.01 - EP US); A61B 5/150389 (2013.01 - EP US); A61B 5/150519 (2013.01 - EP US); A61B 5/153 (2013.01 - EP US); A61B 5/150259 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0103224 A2 19840321; EP 0103224 A3 19840502; EP 0103224 B1 19861126; AT E23793 T1 19861215; DE 3367844 D1 19870115; JP S5985668 A 19840517; US 4519402 A 19850528
DOCDB simple family (application)
EP 83108434 A 19830826; AT 83108434 T 19830826; DE 3367844 T 19830826; JP 15704483 A 19830827; US 52689983 A 19830826